@misc{_Postcard,,
 howpublished={online},
 publisher={Mosella GMBH Trier},
 type={postcard},
 title={Postcard, Alt-Zoppot Hochwasser},
 title={Pocztówka, Alt-Zoppot Hochwasser},
 keywords={Postcard, Grafic desing, Museum collections, Sopot Museum},
}